package main 
import (
	"fmt"
)
func main() {
	var n1 int32 = 12
	var n2 int64
	var n3 int8
	
	n2 = int64(n1) + 20
	n3 = int8(n1) + 9
	fmt.Println("n2=",n2,"n3=",n3)
}